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  <a name="ZH-CN_TOPIC_0000001792342950"></a><a name="ZH-CN_TOPIC_0000001792342950"></a>
  <h1 class="topictitle1">步骤2：注册GaussDB(DWS)集群</h1>
  <div>
   <p>执行GaussDB(DWS)备份恢复前，需要将GaussDB(DWS)集群注册至<span>本产品</span>。</p>
   <div class="section">
    <h4 class="sectiontitle">前提条件</h4>
    <ol>
     <li>已安装ProtectAgent。如果部署方式为非侵入式部署，还需要安装RoachClient。安装操作请参见<span>《ProtectAgent安装指南》</span>中的<span class="uicontrol">“安装roach_client（适用于GaussDB(DWS)）”</span>章节。</li>
     <li>首次注册资源前，需要按照实际需求修改已安装代理主机的GaussDB(DWS)节点的配置文件，详情请参见<a href="zh-cn_topic_0000001839142173.html">修改GaussDB(DWS)配置文件</a>。</li>
    </ol>
   </div>
   <div class="section">
    <h4 class="sectiontitle">注意事项</h4>
    <p>GaussDB(DWS)集群注册成功后不支持修改集群名称，因名称是集群的唯一标识，需要谨慎填写。</p>
   </div>
   <div class="section">
    <h4 class="sectiontitle">操作步骤</h4>
    <ol>
     <li id="ZH-CN_TOPIC_0000001792342950__zh-cn_topic_0000001346641964_zh-cn_topic_0000001249935107_li0198134611381"><span>选择<span class="uicontrol" id="ZH-CN_TOPIC_0000001792342950__zh-cn_topic_0000001839142377_uicontrol865195012392">“<span id="ZH-CN_TOPIC_0000001792342950__zh-cn_topic_0000001839142377_text4651950123919">保护</span> &gt; 大数据 &gt; GaussDB(DWS)”</span>。</span></li>
     <li><span>在<span class="uicontrol">“<span>集群</span>”</span>页面，单击<span class="uicontrol">“<span>注册</span>”</span>，注册GaussDB(DWS)集群。</span><p></p>
      <div class="p">
       相关参数说明如<a href="#ZH-CN_TOPIC_0000001792342950__zh-cn_topic_0000001346641964_table196232217593">表1</a>所示。 
       <div class="tablenoborder">
        <a name="ZH-CN_TOPIC_0000001792342950__zh-cn_topic_0000001346641964_table196232217593"></a><a name="zh-cn_topic_0000001346641964_table196232217593"></a>
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         <caption>
          <b>表1 </b>注册GaussDB(DWS)集群
         </caption>
         <colgroup>
          <col style="width:25.03%">
          <col style="width:74.97%">
         </colgroup>
         <thead align="left">
          <tr>
           <th align="left" class="cellrowborder" valign="top" width="25.03%" id="mcps1.3.4.2.2.2.1.2.2.3.1.1"><p>参数</p></th>
           <th align="left" class="cellrowborder" valign="top" width="74.97%" id="mcps1.3.4.2.2.2.1.2.2.3.1.2"><p>说明</p></th>
          </tr>
         </thead>
         <tbody>
          <tr>
           <td class="cellrowborder" valign="top" width="25.03%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.1 "><p><span>名称</span></p></td>
           <td class="cellrowborder" valign="top" width="74.97%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.2 "><p>自定义GaussDB(DWS)集群名称。</p></td>
          </tr>
          <tr>
           <td class="cellrowborder" valign="top" width="25.03%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.1 "><p><span>用户名</span></p></td>
           <td class="cellrowborder" valign="top" width="74.97%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.2 "><p>运行GaussDB(DWS)集群的系统用户名称。</p></td>
          </tr>
          <tr>
           <td class="cellrowborder" valign="top" width="25.03%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.1 "><p><span>环境变量文件路径</span></p></td>
           <td class="cellrowborder" valign="top" width="74.97%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.2 "><p>集群用户的环境变量配置文件路径。</p></td>
          </tr>
          <tr>
           <td class="cellrowborder" valign="top" width="25.03%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.1 "><p><span>节点</span></p></td>
           <td class="cellrowborder" valign="top" width="74.97%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.2 "><p>选择已经注册的数据保护代理，请至少选择一个有CN实例，且安装了数据保护代理的GaussDB(DWS)节点。</p></td>
          </tr>
          <tr>
           <td class="cellrowborder" valign="top" width="25.03%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.1 "><p><span>代理主机</span></p></td>
           <td class="cellrowborder" valign="top" width="74.97%" headers="mcps1.3.4.2.2.2.1.2.2.3.1.2 "><p>选择安装了RoachClient的数据保护代理。对于内核版本为GaussDB A 8.0.0的GaussDB(DWS)集群，不需要选择代理主机。</p></td>
          </tr>
         </tbody>
        </table>
       </div>
       <div class="note">
        <img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span>
        <div class="notebody">
         <p>不支持添加已经加入到其他GaussDB(DWS)集群的数据保护代理。</p>
        </div>
       </div>
      </div> <p></p></li>
     <li><span>单击<span class="uicontrol">“<span>确定</span>”</span>。</span></li>
    </ol>
   </div>
   <p></p>
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   <div class="familylinks">
    <div class="parentlink">
     <strong>父主题：</strong> <a href="zh-cn_topic_0000001792502686.html">备份GaussDB(DWS)</a>
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